Dell PowerEdge FX2/FX2s - Manual (Page 36)

Lossless traffic is not guaranteed when it is transmitted on a PFC-enabled port and received on a link-
level flow control-enabled port, or transmitted on a link-level flow control-enabled port and received on
a PFC-enabled port.
Enabling DCB on Next Reload To configure the Aggregator so that all interfaces come up with DCB
enabled and flow control disabled, use the dcb enable on-next-reload command. Internal PFC buffers
are automatically configured.
Task Command Command Mode
Globally enable DCB on all
interfaces after next switch
reload. dcb enable on-next-reload CONFIGURATION
To reconfigure the Aggregator so that all interfaces come up with DCB disabled and link-level flow
control enabled, use the no dcb enable on-next-reload command. PFC buffer memory is
automatically freed.
Enabling Auto-DCB-Enable Mode on Next Reload To configure the Aggregator so that all interfaces
come up in auto-DCB-enable mode with DCB disabled and flow control enabled, use the dcb enable
aut-detect on-next-reload command.
Task Command Command Mode
Globally enable auto-detection
of DCBx and auto-enabling of
DCB on all interfaces after switch
reload. dcb enable auto-detect on-next-
reload CONFIGURATION
Enabling DCB To configure the Aggregator so that all interfaces are DCB enabled and flow control
disabled, use the dcb enable command.
Disabling DCB To configure the Aggregator so that all interfaces are DCB disabled and flow control
enabled, use the no dcb enable command.
dcb enable auto-detect on-next-reload Command Example
Dell#dcb enable auto-detect on-next-reload
QoS dot1p Traffic Classification and Queue Assignment
DCB supports PFC, ETS, and DCBx to handle converged Ethernet traffic that is assigned to an egress
queue according to the following QoS methods:
Honor dot1p dot1p priorities in ingress traffic are used at the port or global switch level.
Layer 2 class
maps dot1p priorities are used to classify traffic in a class map and apply a service policy
to an ingress port to map traffic to egress queues.
36 Data Center Bridging (DCB)